| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for charging raw materials into a blast furnace, by which a coke-mixed ore layer can be formed while keeping a mixing rate of coke with ore almost constant from the initial stage of charge to the final stage thereof when coke and ore are charged simultaneously into the bell-less blast furnace from a center feed type apparatus for charging raw materials to form the coke-mixed ore layer in the bell-less blast furnace.SOLUTION: When a coke-mixed ore layer 13 is formed in a bell-less blast furnace 3, the coke is thrown in an upper bunker 2A in such a state that the turning movement of a turning chute 4 of the center feed type apparatus 1 for charging raw materials is stopped, then the ore is thrown in the upper bunker 2A while turning the turning chute 4, thereafter each of opening/closing gates 6A-6D is changed over from a closed state to an opened state to transfer the coke and ore in the upper bunker 2A to a lower bunker 2B. |
